Send a document for signature in a minute.
Upload a PDF, add your signers, pay per signer — that's it. No setup, no seats, none of the enterprise e-sign dread.
Three steps. Under a minute.
Upload
Drop a PDF — or pick one from your device. No formatting, no field-dragging.
Add signers
Name, email, phone for each person. They'll sign by text — secure and instant.
Send
Pay per signer and send. Everyone gets a link. You get a tracking page.
Simple to send. Serious underneath.
Friendly on the surface, airtight where it counts — so a quick send still holds up.
Sealed, audit-ready PDFs
Every signed document is cryptographically sealed with a full audit trail. Tamper-evident, court-ready.
OTP-over-SMS signing
Signers verify with a one-time code by text. Identity confirmed, no app, no password to forget.
Signed-event webhooks
Get a callback the instant a document is signed. Wire OneTapSign into whatever happens next.
Your agent can send it for you.
OneTapSign ships an MCP server — add one URL to Claude, Cursor, or any MCP client, no API key. Then just ask: “Send this contract for signature” — done, straight from the conversation.
See it from ClaudePay per signer. That's it.
No subscription. No minimums. A 3-signer contract costs $3.